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This article introduces how to get the current login user information in ASP.NET Core 2.0 MVC, the content is very detailed, interested friends can refer to, hope to be helpful to you.

Use Session to store the currently logged-in user information

First, to use Session in ASP.NET Core, we need to inject Session into the pipeline of ASP.NET Core, in the same way we use MVC, in ConfigureServices (IServiceCollection services), add

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Services.AddSession ()

Add to Configure (IApplicationBuilder app, IHostingEnvironment env)

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App.UseSession ()

This way, we can use Session in MVC. Of course, now we can only get the Session object in Controller. If we want to use the Session object in other class files, we need to inject the IHttpContextAccessor object. Here, we can use nuget to add the Microsoft.AspNetCore.Http.Extensions assembly, which makes it easy for us to operate on Session.

Because we use the static class as the carrier for the currently logged-in user, and the static class cannot have an instance constructor, I use a configuration method to inject it, as shown in the CurrentUser class.

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Public static class CurrentUser

{

# region Initialize

Private static IHttpContextAccessor _ httpContextAccessor

Private static ISession _ session = > _ httpContextAccessor.HttpContext.Session

Public static void Configure (IHttpContextAccessor httpContextAccessor)

{

_ httpContextAccessor = httpContextAccessor

}

# endregion

# region Attribute

/ / /

/ / user primary key

/ / /

Public static string UserOID

{

Get = > _ session = = null? "": _ session.GetString ("CurrentUser_UserOID")

Set = > _ session.SetString (CurrentUser_UserOID,! string.IsNullOrEmpty (value)? Value: "")

}

/ / /

/ / user number

/ / /

Public static long UserId

{

Get = > _ session = = null? 0: Convert.ToInt64 (_ session.GetString ("CurrentUser_UserId"))

Set = > _ session.SetString ("CurrentUser_UserId", value! = 0? Value.ToString (): "0")

}

/ / /

/ / user name

/ / /

Public static string UserName

{

Get = > _ session = = null? "": _ session.GetString ("CurrentUser_UserName")

Set = > _ session.SetString (CurrentUser_UserName,! string.IsNullOrEmpty (value)? Value: "")

}

/ / /

/ / user logs in to the account

/ / /

Public static string UserAccount

{

Get = > _ session = = null? "": _ session.GetString ("CurrentUser_UserAccount")

Set = > _ session.SetString (CurrentUser_UserAccount,! string.IsNullOrEmpty (value)? Value: "")

}

/ / /

/ / user avatar address

/ / /

Public static string UserImage

{

Get = > _ session = = null? "": _ session.GetString ("CurrentUser_UserImage")

Set = > _ session.SetString (CurrentUser_UserImage,! string.IsNullOrEmpty (value)? Value: "")

}

/ / /

/ / user role

/ / /

Public static string UserRole

{

Get = > _ session = = null? "": _ session.GetString ("CurrentUser_UserRole")

Set = > _ session.SetString (CurrentUser_UserRole,! string.IsNullOrEmpty (value)? Value: "")

}

/ / /

/ / Home address

/ / /

Public static string UserPage

{

Get = > _ session = = null? "": _ session.GetString ("CurrentUser_UserPage")

Set = > _ session.SetString (CurrentUser_UserPage,! string.IsNullOrEmpty (value)? Value: "")

}

# endregion

}

When we have created such a static class, we can assign the currently logged-in user information to the static class after the login is successful, so that we can directly use the static class CurrentUser where we need it. After the actual use at that time, it is found that if you want to get the user information stored after login, you must call the Configure method of CurrentUser in the construction method of Controller, which virtually increases a lot of work.

The sample code for the constructor of Controller is as follows:

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[Area ("Administrator")]

[Authorize (Policy = "Administrator")]

Public class HomeController: DanvicController

{

# region Initialize

Private readonly ApplicationDbContext _ context

Private readonly ILogger _ logger

Private readonly IHomeService _ service

Private readonly IHttpContextAccessor _ httpContextAccessor

Public HomeController (IHomeService service, ILogger logger, IHttpContextAccessor httpContextAccessor, ApplicationDbContext context)

{

_ service = service

_ logger = logger

_ httpContextAccessor = httpContextAccessor

_ context = context

CurrentUser.Configure (_ httpContextAccessor)

}

# endregion

# region View

# endregion

}

The relevant code for assigning a value to CurrentUser after a successful login is as follows:

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/ / /

/ set the currently logged in user

/ / /

Public async Task SetCurrentUser (string oid, IHttpContextAccessor httpContextAccessor, ApplicationDbContext context)

{

CurrentUser.Configure (httpContextAccessor)

Var user = await PSURepository.GetUserByOIDAsync (oid, context)

If (user! = null)

{

String role = string.Empty

Switch (user.AccountType)

{

Case 0:

Role = "Administrator"

Break

Case 1:

Role = "Instructor"

Break

Case 2:

Role = "Student"

Break

}

CurrentUser.UserAccount = user.Account

CurrentUser.UserId = user.Id

CurrentUser.UserImage = user.ImageSrc

CurrentUser.UserName = user.Name

CurrentUser.UserOID = user.IdentityUserOID

CurrentUser.UserRole = role

CurrentUser.UserPage = user.HomePage

}

}

So much for sharing about how to get the current login user information in ASP.NET Core 2.0 MVC. I hope the above content can be of some help and learn more knowledge. If you think the article is good, you can share it for more people to see.

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